First slide

Moment of inertia

Question

Figure shows a thin metallic triangular sheet ABC. The mass of the sheet is M. The moment of inertia of the sheet about side AC is

Moderate

A

$\frac{M l^{2}}{18}$
B

$\frac{M l^{2}}{12}$
C

$\frac{M l^{2}}{6}$
D

$\frac{M l^{2}}{4}$

Solution

Moment of inertia of ABC about $A C = \frac{1}{2} \times$ moment of inertia of square sheet ABCD about $A C = \frac{1}{2} \times [2 M] \times \frac{l^{2}}{12} = \frac{M l^{2}}{12}$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App